CSharp examples for System:String HTML
Decode Hex Value to HTML entity
using System.Text; using System.IO;/*w w w . j a va2 s .c o m*/ using System.Globalization; using System; public class Main{ public static string DecodeHexValue(string s) { System.Collections.Hashtable entities = new System.Collections.Hashtable(); entities.Add("nbsp", '\u00A0'); entities.Add("iexcl", '\u00A1'); entities.Add("cent", '\u00A2'); entities.Add("pound", '\u00A3'); entities.Add("curren", '\u00A4'); entities.Add("yen", '\u00A5'); entities.Add("brvbar", '\u00A6'); entities.Add("sect", '\u00A7'); entities.Add("uml", '\u00A8'); entities.Add("copy", '\u00A9'); entities.Add("ordf", '\u00AA'); entities.Add("laquo", '\u00AB'); entities.Add("not", '\u00AC'); entities.Add("shy", '\u00AD'); entities.Add("reg", '\u00AE'); entities.Add("macr", '\u00AF'); entities.Add("deg", '\u00B0'); entities.Add("plusmn", '\u00B1'); entities.Add("sup2", '\u00B2'); entities.Add("sup3", '\u00B3'); entities.Add("acute", '\u00B4'); entities.Add("micro", '\u00B5'); entities.Add("para", '\u00B6'); entities.Add("middot", '\u00B7'); entities.Add("cedil", '\u00B8'); entities.Add("sup1", '\u00B9'); entities.Add("ordm", '\u00BA'); entities.Add("raquo", '\u00BB'); entities.Add("frac14", '\u00BC'); entities.Add("frac12", '\u00BD'); entities.Add("frac34", '\u00BE'); entities.Add("iquest", '\u00BF'); entities.Add("Agrave", '\u00C0'); entities.Add("Aacute", '\u00C1'); entities.Add("Acirc", '\u00C2'); entities.Add("Atilde", '\u00C3'); entities.Add("Auml", '\u00C4'); entities.Add("Aring", '\u00C5'); entities.Add("AElig", '\u00C6'); entities.Add("Ccedil", '\u00C7'); entities.Add("Egrave", '\u00C8'); entities.Add("Eacute", '\u00C9'); entities.Add("Ecirc", '\u00CA'); entities.Add("Euml", '\u00CB'); entities.Add("Igrave", '\u00CC'); entities.Add("Iacute", '\u00CD'); entities.Add("Icirc", '\u00CE'); entities.Add("Iuml", '\u00CF'); entities.Add("ETH", '\u00D0'); entities.Add("Ntilde", '\u00D1'); entities.Add("Ograve", '\u00D2'); entities.Add("Oacute", '\u00D3'); entities.Add("Ocirc", '\u00D4'); entities.Add("Otilde", '\u00D5'); entities.Add("Ouml", '\u00D6'); entities.Add("times", '\u00D7'); entities.Add("Oslash", '\u00D8'); entities.Add("Ugrave", '\u00D9'); entities.Add("Uacute", '\u00DA'); entities.Add("Ucirc", '\u00DB'); entities.Add("Uuml", '\u00DC'); entities.Add("Yacute", '\u00DD'); entities.Add("THORN", '\u00DE'); entities.Add("szlig", '\u00DF'); entities.Add("agrave", '\u00E0'); entities.Add("aacute", '\u00E1'); entities.Add("acirc", '\u00E2'); entities.Add("atilde", '\u00E3'); entities.Add("auml", '\u00E4'); entities.Add("aring", '\u00E5'); entities.Add("aelig", '\u00E6'); entities.Add("ccedil", '\u00E7'); entities.Add("egrave", '\u00E8'); entities.Add("eacute", '\u00E9'); entities.Add("ecirc", '\u00EA'); entities.Add("euml", '\u00EB'); entities.Add("igrave", '\u00EC'); entities.Add("iacute", '\u00ED'); entities.Add("icirc", '\u00EE'); entities.Add("iuml", '\u00EF'); entities.Add("eth", '\u00F0'); entities.Add("ntilde", '\u00F1'); entities.Add("ograve", '\u00F2'); entities.Add("oacute", '\u00F3'); entities.Add("ocirc", '\u00F4'); entities.Add("otilde", '\u00F5'); entities.Add("ouml", '\u00F6'); entities.Add("divide", '\u00F7'); entities.Add("oslash", '\u00F8'); entities.Add("ugrave", '\u00F9'); entities.Add("uacute", '\u00FA'); entities.Add("ucirc", '\u00FB'); entities.Add("uuml", '\u00FC'); entities.Add("yacute", '\u00FD'); entities.Add("thorn", '\u00FE'); entities.Add("yuml", '\u00FF'); entities.Add("fnof", '\u0192'); entities.Add("Alpha", '\u0391'); entities.Add("Beta", '\u0392'); entities.Add("Gamma", '\u0393'); entities.Add("Delta", '\u0394'); entities.Add("Epsilon", '\u0395'); entities.Add("Zeta", '\u0396'); entities.Add("Eta", '\u0397'); entities.Add("Theta", '\u0398'); entities.Add("Iota", '\u0399'); entities.Add("Kappa", '\u039A'); entities.Add("Lambda", '\u039B'); entities.Add("Mu", '\u039C'); entities.Add("Nu", '\u039D'); entities.Add("Xi", '\u039E'); entities.Add("Omicron", '\u039F'); entities.Add("Pi", '\u03A0'); entities.Add("Rho", '\u03A1'); entities.Add("Sigma", '\u03A3'); entities.Add("Tau", '\u03A4'); entities.Add("Upsilon", '\u03A5'); entities.Add("Phi", '\u03A6'); entities.Add("Chi", '\u03A7'); entities.Add("Psi", '\u03A8'); entities.Add("Omega", '\u03A9'); entities.Add("alpha", '\u03B1'); entities.Add("beta", '\u03B2'); entities.Add("gamma", '\u03B3'); entities.Add("delta", '\u03B4'); entities.Add("epsilon", '\u03B5'); entities.Add("zeta", '\u03B6'); entities.Add("eta", '\u03B7'); entities.Add("theta", '\u03B8'); entities.Add("iota", '\u03B9'); entities.Add("kappa", '\u03BA'); entities.Add("lambda", '\u03BB'); entities.Add("mu", '\u03BC'); entities.Add("nu", '\u03BD'); entities.Add("xi", '\u03BE'); entities.Add("omicron", '\u03BF'); entities.Add("pi", '\u03C0'); entities.Add("rho", '\u03C1'); entities.Add("sigmaf", '\u03C2'); entities.Add("sigma", '\u03C3'); entities.Add("tau", '\u03C4'); entities.Add("upsilon", '\u03C5'); entities.Add("phi", '\u03C6'); entities.Add("chi", '\u03C7'); entities.Add("psi", '\u03C8'); entities.Add("omega", '\u03C9'); entities.Add("thetasym", '\u03D1'); entities.Add("upsih", '\u03D2'); entities.Add("piv", '\u03D6'); entities.Add("bull", '\u2022'); entities.Add("hellip", '\u2026'); entities.Add("prime", '\u2032'); entities.Add("Prime", '\u2033'); entities.Add("oline", '\u203E'); entities.Add("frasl", '\u2044'); entities.Add("weierp", '\u2118'); entities.Add("image", '\u2111'); entities.Add("real", '\u211C'); entities.Add("trade", '\u2122'); entities.Add("alefsym", '\u2135'); entities.Add("larr", '\u2190'); entities.Add("uarr", '\u2191'); entities.Add("rarr", '\u2192'); entities.Add("darr", '\u2193'); entities.Add("harr", '\u2194'); entities.Add("crarr", '\u21B5'); entities.Add("lArr", '\u21D0'); entities.Add("uArr", '\u21D1'); entities.Add("rArr", '\u21D2'); entities.Add("dArr", '\u21D3'); entities.Add("hArr", '\u21D4'); entities.Add("forall", '\u2200'); entities.Add("part", '\u2202'); entities.Add("exist", '\u2203'); entities.Add("empty", '\u2205'); entities.Add("nabla", '\u2207'); entities.Add("isin", '\u2208'); entities.Add("notin", '\u2209'); entities.Add("ni", '\u220B'); entities.Add("prod", '\u220F'); entities.Add("sum", '\u2211'); entities.Add("minus", '\u2212'); entities.Add("lowast", '\u2217'); entities.Add("radic", '\u221A'); entities.Add("prop", '\u221D'); entities.Add("infin", '\u221E'); entities.Add("ang", '\u2220'); entities.Add("and", '\u2227'); entities.Add("or", '\u2228'); entities.Add("cap", '\u2229'); entities.Add("cup", '\u222A'); entities.Add("int", '\u222B'); entities.Add("there4", '\u2234'); entities.Add("sim", '\u223C'); entities.Add("cong", '\u2245'); entities.Add("asymp", '\u2248'); entities.Add("ne", '\u2260'); entities.Add("equiv", '\u2261'); entities.Add("le", '\u2264'); entities.Add("ge", '\u2265'); entities.Add("sub", '\u2282'); entities.Add("sup", '\u2283'); entities.Add("nsub", '\u2284'); entities.Add("sube", '\u2286'); entities.Add("supe", '\u2287'); entities.Add("oplus", '\u2295'); entities.Add("otimes", '\u2297'); entities.Add("perp", '\u22A5'); entities.Add("sdot", '\u22C5'); entities.Add("lceil", '\u2308'); entities.Add("rceil", '\u2309'); entities.Add("lfloor", '\u230A'); entities.Add("rfloor", '\u230B'); entities.Add("lang", '\u2329'); entities.Add("rang", '\u232A'); entities.Add("loz", '\u25CA'); entities.Add("spades", '\u2660'); entities.Add("clubs", '\u2663'); entities.Add("hearts", '\u2665'); entities.Add("diams", '\u2666'); entities.Add("quot", '\u0022'); entities.Add("amp", '\u0026'); entities.Add("lt", '\u003C'); entities.Add("gt", '\u003E'); entities.Add("OElig", '\u0152'); entities.Add("oelig", '\u0153'); entities.Add("Scaron", '\u0160'); entities.Add("scaron", '\u0161'); entities.Add("Yuml", '\u0178'); entities.Add("circ", '\u02C6'); entities.Add("tilde", '\u02DC'); entities.Add("ensp", '\u2002'); entities.Add("emsp", '\u2003'); entities.Add("thinsp", '\u2009'); entities.Add("zwnj", '\u200C'); entities.Add("zwj", '\u200D'); entities.Add("lrm", '\u200E'); entities.Add("rlm", '\u200F'); entities.Add("ndash", '\u2013'); entities.Add("mdash", '\u2014'); entities.Add("lsquo", '\u2018'); entities.Add("rsquo", '\u2019'); entities.Add("sbquo", '\u201A'); entities.Add("ldquo", '\u201C'); entities.Add("rdquo", '\u201D'); entities.Add("bdquo", '\u201E'); entities.Add("dagger", '\u2020'); entities.Add("Dagger", '\u2021'); entities.Add("permil", '\u2030'); entities.Add("lsaquo", '\u2039'); entities.Add("rsaquo", '\u203A'); entities.Add("euro", '\u20AC'); if (s == null) throw new ArgumentNullException("s"); bool insideEntity = false; string entity = String.Empty; StringBuilder output = new StringBuilder(); foreach (char c in s) { switch (c) { case '&': output.Append(entity); entity = "&"; insideEntity = true; break; case ';': if (!insideEntity) { output.Append(c); break; } entity += c; int length = entity.Length; if (length >= 2 && entity[1] == '#' && entity[2] != ';') entity = ((char)Int32.Parse(entity.Substring(2, entity.Length - 3))).ToString(); else if (length > 1 && entities.ContainsKey(entity.Substring(1, entity.Length - 2))) entity = entities[entity.Substring(1, entity.Length - 2)].ToString(); output.Append(entity); entity = String.Empty; insideEntity = false; break; default: if (insideEntity) entity += c; else output.Append(c); break; } } output.Append(entity); return output.ToString(); } }